Finding the Third Proportional to 12,472 and 20,784

Step by Step Solution

1. Step 1: Write the proportion equation
   12,472 : 20,784 = 20,784 : x
2. Step 2: Convert to fraction form
   12,472/20,784 = 20,784/x
3. Step 3: Cross multiply
   12,472x = 20,784 × 20,784
4. Step 4: Simplify right side
   12,472x = 431,974,656
5. Step 5: Solve for x
   x = 431,974,656/12,472
6. Step 6: Final answer
   x = 34,635.56